100 Pesos Mexico City Coat of Arms (2003): Silver-Center Coin Value

If you inherited or found a Mexican 100 Pesos coin dated 2003 with the Mexico City coat of arms, here is the direct answer: it is worth roughly 15 to 40 USD in most cases, and more if it is in pristine condition. This is not the ordinary 100 pesos you get in change. It has a real silver center, which is why it holds value.

This coin belongs to the Estados series, a 32-coin set the Mexican Mint (Casa de Moneda de México) issued to represent each of Mexico's 31 states plus the Federal District (Distrito Federal, now Mexico City). Each coin carries a different state coat of arms on the reverse. The one you have shows the emblem of the capital.

What it's worth in 2026

The value comes down to two things: the silver in the center core and the grade (condition). A coin that circulated or was tossed in a drawer sits near the low end. A coin in BU (Brilliant Uncirculated, meaning it never circulated and keeps its original mint luster) sells well above that.

Condition	Approximate value (USD)
Circulated, handled	15 to 22
Uncirculated (BU)	25 to 40
Certified high grade (NGC/PCGS MS67+)	50 to 100+

These are typical dealer and collector ranges, not record prices. The Mexico City piece tends to be one of the more sought-after in the set because of the symbolic weight of the capital, but that demand is modest, not dramatic. Do not expect a windfall from a single common-date example.

The specs (keep these for authentication)

• Denomination: 100 Pesos
• Year: 2003
• Type: Bimetallic (silver center core, outer ring in base alloy)
• Weight: 33.78 g
• Diameter: 39 mm
• Edge: Interrupted reeded (segmented reeding)
• Obverse: Mexican national coat of arms (shared across the whole series)
• Reverse: Mexico City coat of arms
• Mint: Casa de Moneda de México

The silver center is the reason this coin has a floor value that ordinary circulating 100 pesos coins do not. Because it is a legal-tender collector coin, it was made both for Mexican collectors and for people getting into precious metal without leaving the peso system.

Is it rare?

No, not in the strict sense. These were produced in collector quantities and are readily available on the market. What raises the price above the base range is condition and certification, not scarcity. A common example in worn condition is worth its silver content plus a small collector premium. A flawless, graded example is where the real premium lives.

If you are trying to complete the full 32-coin set, then each individual piece matters and the Mexico City coin is a common target. That collector demand supports the price but does not turn a single coin into a fortune.

How to tell if yours is genuine

1. Weigh it. It should hit 33.78 g on a jewelry scale. A fake usually misses the weight.
2. Measure it. The diameter is exactly 39 mm. Use calipers.
3. Check the edge. It should show the interrupted (segmented) reeding, not a plain or continuously reeded edge.
4. Look at the relief and color separation. Genuine coins have crisp detail and a clean line between the silver center and the outer ring. Fakes often look flat with muddy color boundaries.

If the weight and diameter are off, or the two metals blur together, be skeptical.

Where to sell it

To sell without getting lowballed:

• Take clear photos of the obverse, reverse, and edge.
• Check the value range on this page first so you know what you are holding.
• Use a verified numismatic shop from the Pesoteca directory for an on-the-spot appraisal, or the Pesoteca buy-and-sell forum to reach collectors directly.

Avoid dumping it to the first bidder on social media. For a certified high-grade example, getting it graded by NGC or PCGS before selling can pay for itself.

If you have this coin and want a read on its grade, or you think you spotted a minting error, post your photos in the Pesoteca forum and let the community weigh in before you sell.

The 100 pesos Union of the States of the Mexican Republic series began in 2003 with the first stage, called the Coat of Arms stage because the reverse carries the official armory of each of the 32 states. The piece dedicated to Mexico City is part of that first block of 32 coins, issued by Banxico under the framework of the Monetary System that has governed the modern peso since the nuevos pesos reform of 1993.

Mexico City has Mexico City as its capital. It is the most recent federal entity: the Federal District became Mexico City by a constitutional reform published in the Diario Oficial de la Federación on January 29, 2016, though in 2003 it was still the Federal District in terms of legal status. The reverse of the piece shows the state's official coat of arms, with no reference to specific historical episodes: the central motif is the heraldic emblem. For mintages and economic circulation data of each piece of the series, the sources are the official Banxico reports; until they are verified in the CM10 catalog they are not reported in this listing.